Business Owners: Which Retirement Plan Still Fits If You Start Late
Financial Horizons: Insights for Building Wealth and Securing Your Legacy
Business Owners: Which Retirement Plan Still Fits If You Start Late
By Dr. Jose G. Cardenas | Chief Tax Strategist, The C & R Group, LLC
Today is Election Day.
Across the country, Americans are making choices about who they want representing them and what direction they want their communities to take.
Whatever your political views, there is a useful financial lesson in the process:
Good decisions begin with understanding the choices.
Business retirement planning works the same way.
By November, many business owners assume they have waited too long to establish or fund a retirement plan for the year.
Sometimes they have missed an option.
But not always.
Depending on the business structure, employees, income, and plan involved, several retirement strategies may still be available.
The key is not picking the plan with the largest advertised deduction.
It is making an informed choice based on what actually fits the business.
You do not need every retirement plan on the ballot. You need the one that fits your business, your cash flow, and your long-term strategy.
Start With the Business, Not the Plan
Before comparing retirement accounts, answer a few basic questions.
Do you have employees?
Is it only you and your spouse?
How much profit is the business producing?
How much cash can the business realistically contribute?
Do you want employee salary deferrals?
Are you primarily looking for simplicity?
Or do you want the ability to make larger contributions?
Those answers quickly narrow the field.
A retirement plan that works beautifully for a solo consultant may be a poor fit for a company with ten employees.
Likewise, a plan that offers a large potential contribution is not automatically useful if the business cannot comfortably fund it.
This is why retirement-plan selection should begin with business design—not tax deduction size.
Option One: The Solo 401(k)
For an owner with no common-law employees other than possibly a spouse, a one-participant 401(k)—often called a Solo 401(k)—can be a powerful option.
The owner effectively wears two hats:
employee
and
employer.
That means contributions can potentially be made in both capacities. The IRS confirms that one-participant 401(k) plans allow eligible owners to make employee elective deferrals as well as employer nonelective contributions, subject to the applicable limits.
For 2026, the employee elective-deferral limit is $24,500.
The overall defined-contribution limit is generally $72,000, before applicable catch-up contributions. Eligible participants age 50 or older may have additional catch-up capacity, with a larger catch-up available for certain participants ages 60 through 63.
That does not mean every owner can automatically contribute $72,000.
Actual contribution capacity depends on compensation, business structure, other retirement plans, and the contribution calculation.
And remember: employee elective-deferral limits are generally measured per person, not separately for every 401(k) plan. So an owner who also participates in another employer's 401(k) must coordinate the limits.
What If You Are Starting the Solo 401(k) Late?
This is where timing gets interesting.
Qualified plans generally have setup deadlines, but SECURE 2.0 created additional first-year flexibility for certain sole proprietors with no employees.
IRS guidance explains that a sole proprietor with no other employees may, in certain first-year situations, adopt a new 401(k) after year-end and make qualifying elective-deferral contributions by the individual tax-return filing date, without extensions.
That is a very specific rule.
It should not be interpreted as:
“Every business owner can wait until April to open a Solo 401(k).”
Entity type, employees, plan year, compensation, and contribution type matter.
That is exactly why November is the right time to review the opportunity rather than relying on a rule-of-thumb from social media.
Option Two: The SEP IRA
For business owners who want simplicity, the SEP IRA remains especially attractive late in the year.
A major advantage is timing.
The IRS permits an eligible employer to establish a SEP for a year as late as the due date of the business's income-tax return, including extensions. Employer contributions can also generally be made by the applicable return due date, including extensions.
For 2026, the SEP maximum contribution is generally $72,000, subject to compensation limits and the applicable contribution formula.
That can make the SEP especially useful when a business owner reaches November and says:
“I had a much better year than expected, but I never established a retirement plan.”
The SEP may still provide an option.
But there is an important catch.
If you have eligible employees, the contribution rules generally require you to include them under the plan's eligibility and allocation rules.
So the SEP that looks wonderful for the owner may create a much larger employer contribution obligation than expected.
Again, plan design matters.
Option Three: SIMPLE IRA—Probably Not for This Year
The SIMPLE IRA can be a good retirement-plan option for certain small employers.
But timing matters.
An employer generally may establish a SIMPLE IRA effective between January 1 and October 1 if it did not previously maintain one.
There is an exception for a new employer that comes into existence after October 1 and establishes the plan as soon as administratively feasible.
Today is November 3.
So for an established business that did not already create a SIMPLE IRA, that option is generally no longer on the 2026 ballot.
That does not make the SIMPLE IRA a bad plan.
It simply means timing has removed it from consideration for many existing businesses this year.
And that is an important year-end lesson:
Sometimes the best plan is no longer available because the decision was delayed.
What About a Traditional Small-Business 401(k)?
Businesses with employees may also consider a traditional or safe-harbor 401(k).
These plans can offer substantial benefits but also come with more administration.
A 401(k) plan generally requires a written plan document, a trust for plan assets, a recordkeeping system, and participant communications.
Employee eligibility, employer contributions, nondiscrimination testing, safe-harbor rules, payroll integration, and administrative costs all need to be considered.
For a growing business, that additional structure may be completely worthwhile.
But November is not the time to casually pick a 401(k) just because someone said it offers a big deduction.
The business needs to understand what it is committing to.
A Quick Example
Consider Marcus, who owns a consulting business.
He has no employees.
His 2026 profit is much higher than expected.
It is now November, and Marcus realizes he has done very little retirement planning.
He assumes it is too late.
Instead, he compares two realistic choices:
a Solo 401(k),
and a SEP IRA.
The Solo 401(k) may offer both employee and employer contribution opportunities.
The SEP offers simplicity and more flexible establishment timing.
Marcus already contributes to a 401(k) through another employer, which affects how much employee elective-deferral room remains.
That changes the analysis.
Suddenly, the question is not:
“Which plan has the highest limit?”
It becomes:
“Which plan gives Marcus the best combination of contribution capacity, simplicity, cost, cash-flow fit, and long-term flexibility?”
That is the right question.
Election Day Is a Good Reminder About Financial Choices
Election Day revolves around choices.
You identify the options.
Understand what each one represents.
Consider the consequences.
And make a decision.
Retirement planning deserves the same discipline.
Do not choose a SEP simply because it is easy.
Do not choose a Solo 401(k) simply because you heard you can contribute more.
Do not choose Roth simply because someone said “tax-free.”
And do not choose Traditional solely because you want today's deduction.
Understand what you are choosing.
Then make the strategy fit the mission.
Your Five Questions Before Choosing a Plan
Before establishing a late-year retirement plan, ask:
Do I have employees—or is the business owner-only?
How much compensation and business profit support the contribution?
How much cash can the business comfortably commit?
Which plans are still legally available for 2026?
Does the plan fit my long-term tax and retirement strategy—not just this year's deduction?
Those five questions can narrow the field quickly.
Final Thought
If you are starting retirement planning in November, you may be late.
But late does not necessarily mean too late.
Some options may already be gone.
Others may still provide substantial opportunity.
The important thing is to stop guessing.
Review the business.
Review the deadlines.
Review the employees.
Review the cash flow.
Then make the choice.
The best retirement plan is not the one with the biggest number next to it. It is the one that fits the business you actually own and the future you are trying to build.
On Election Day, that is a financial principle worth remembering:
Know your options. Understand the consequences. Make an informed choice.
Book Your Year-End Retirement Tax Strategy Consultation
If your business has had a strong 2026 and you still have not established or fully reviewed your retirement strategy, there may still be options available.
We can review your business structure, employees, projected profit, retirement-plan opportunities, contribution capacity, tax exposure, and cash-flow needs before year-end.
Booking link:
https://api.leadconnectorhq.com/widget/booking/T4UHUjCijCtIB3rwoTDI
Phone: 580-699-1591
Booking your appointment now:
ABOUT THE AUTHOR
Dr. Jose G. Cardenas is a retired U.S. Army Finance Officer and the Chief Tax Strategist at The C & R Group, LLC. With a Doctorate in Business Administration and over 20 years of experience in tax planning and financial strategy, Dr. Cardenas helps individuals and business owners legally reduce taxes, strengthen cash flow, and build lasting wealth and legacy. Learn more at www.thecrgroupllc.com
DISCLOSURE
This article is for educational and informational purposes only and is not intended to serve as personalized legal, tax, or investment advice. Tax laws and regulations change over time and may vary by jurisdiction. You should consult with a qualified tax professional regarding your specific circumstances before implementing any strategy discussed here. Dr. Jose G. Cardenas, DBA, provides tax advisory services through The C & R Group, LLC. Insurance and investment strategies may be offered through his role as a licensed financial professional affiliated with Experior Financial Group.
